Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke250 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB
The ACQJ140X250-100SB is a big-bore JIS compact double-acting cylinder engineered for on-machine extend stroke tuning. An external M27x2.0 threaded stop with a lock nut limits the outward travel, providing a usable extend range of 150 to 250 mm from the 250 mm full stroke. The retract distance remains fixed. Force output is identical to a standard ACQ of this bore, delivering 7696.9 N push and 7294.8 N pull at 0.5 MPa.
This variant includes a built-in piston magnet (-S) compatible with reed or solid-state electronic switches, and a male M30x1.5 piston rod end (-B) for direct load coupling. It features a 32 mm rod, PT3/8 port, and fixed NBR elastomer bumpers at both ends. Operating pressure spans 0.15-1.0 MPa, with a speed range of 30-500 mm/s.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 250 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M22×2.5 (F) / M30×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×250 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB Is Used
Press Tonnage Setup
Dial in the exact 150 to 250 mm extend position during press tooling setup without machining new spacer rings.
Heavy Stamping Changeover
Accommodate varied blank heights on a heavy stamping line by turning the external M27x2.0 stop to match product dimensions.
Large Fixture Clamping
Adapt clamp reach on large welding fixtures, using the male M30x1.5 rod end to secure varying workpiece thicknesses safely.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB the Right Cylinder?
Selecting this 140 mm bore provides a 1570 kgf maximum push at 1.0 MPa. Stepping down to the 125 mm bore yields 6135.9 N push at 0.5 MPa, while the larger 160 mm bore offers 10053.1 N push at 0.5 MPa. Choose this adjustable model when fixture setups vary by up to 100 mm; if the extend position never changes, a fixed-stroke ACQ suffices. Confirm the ordering essentials: 140 mm bore, 250 mm full stroke, 100 mm window, S magnet, and B male rod thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X250-100SB FAQ
It delivers 7696.9 N push and 7294.8 N pull at 0.5 MPa, 10775.7 N push at 0.7 MPa, and a 1570 kgf max push at 1.0 MPa. The 250 mm full stroke has a 100 mm adjustable window, giving a usable extend range of 150-250 mm. The port is PT3/8, the male rod thread is M30x1.5, and the external adjuster thread is M27x2.0.
No, the external stop changes only the extend length, leaving piston area and force identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers at each end, not an adjustable air cushion. For high energy loads, add an external shock absorber. Note that a plain compact cylinder drifts on air loss; use an external rod lock for fail-safe holding.
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